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Inspection Rom Instruction - Pioneer PX-7 Service Manual

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MSX-BASIC
ROM
TEST
(ID
MSX-BASIC
ROM
TEST
1.
The
first
256
bytes
in
each
4K
bytes of
normal
MSX-BASIC
ROM
data
[1]
thru
[8]
is
stored
in
addresses
1800H
thru
1FFFH
of
the
INSPEC-
TION
2
ROM.
2.
Each
256
bytes of
normal check
sum
data
(128
bytes)
from
0000
to
7FFFH
of the
MSX-BASIC
ROM
is
stored
in
addresses
1500H
thru
157FH
of
the
INSPECTION
ROM.
IIMIJlii
INSPECTION
2
ROM
The
MSX-BASIC
ROM
test
is
executed
by
checking the above data
and
the
check
sum
of
all
MSX-BASIC
ROM
bytes.
Note
that since
this test
is
based
on
the
MSX-UK
version ('84.6.29
FIX),
a
NG
test result
may
be obtained
for other
normal
ROMs
if
the contents of the
ROM
differ
due
to
subsequent
version up-grading.
MSX-BASIC
ROM
Fig.
11-19
MSX-BASIC
ROM
test

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